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Physics · 2023 · 30 Jan · Shift 2

26 questions from this JEE Main paper

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2023 · 30 Jan · Shift 2
Physics

Physics · 2023 · 30 Jan · Shift 2

26 questions from this JEE Main paper

Motion in A Straight Line1 questions Units and Measurements1 questions Gravitation1 questions Properties of Matter1 questions Dual Nature of Radiation1 questions Center of Mass1 questions Current Electricity2 questions Alternating Current2 questions Geometrical Optics1 questions Electromagnetic Waves1 questions Laws of Motion1 questions Electrostatics2 questions Heat and Thermodynamics2 questions Magnetics2 questions Electronic Devices1 questions Simple Harmonic Motion2 questions Wave Optics1 questions Rotational Motion1 questions Work Power and Energy1 questions Circular Motion1 questions

Q45.A vehicle travels $3 km / h$ with speed of $3 km / h$ and another $5 km / h$ with speed of $5 km / h$ , then its average speed is
Physics · Motion in A Straight Line · MCQ
Q46.Match List I with List II: Choose the correct answer from the options given below: Includes table
Physics · Units and Measurements · MCQ
Q47.An object is allowed to fall from a height $R$ above the earth, where $R$ is the radius of earth. Its velocity when it strikes the earth's surface, ignoring air resistance, will be
Physics · Gravitation · MCQ
Q48.A force is applied to a steel wire 'A', rigidly clamped at one end. As a result elongation in the wire is $B$ . If same force is applied to another steel wire ' $B$ ' of double the length and a diameter $2.4$ times…
Physics · Properties of Matter · MCQ
Q49.An electron accelerated through a potential difference $V_{1}$ has a de-Broglie wavelength of $λ$ . When the potential is changed to $V_{2}$ , its de-Broglie wavelength increases by $50%$ . The value of $(\frac{V _{1}}{V _{2}})$ …
Physics · Dual Nature of Radiation · MCQ
Q50.A machine gun of mass $20 g$ fires $100 m s^{- 1}$ bullets at the rate of 180 bullets per minute with a speed of $100 m s^{- 1}$ each. The recoil velocity of the gun is
Physics · Center of Mass · MCQ
Q51.The equivalent resistance between $A$ and $B$ is . Includes diagram
Physics · Current Electricity · MCQ
Q52.In the given circuit, rms value of current $(I_{rms})$ through the resistor $R$ is: Includes diagram
Physics · Alternating Current · MCQ
Q53.A thin prism $P_{1}$ with an angle $6^{\circ}$ and made of glass of refractive index $1.54$ is combined with another prism $P_{2}$ made from glass of refractive index $1.72$ to produce dispersion without average deviation. The angle of prism $P_{2}$ …
Physics · Geometrical Optics · MCQ
Q54.A point source of $5%$ emits light with $5%$ efficiency. At a distance of $5 m$ from the source, the intensity produced by the electric field component is:
Physics · Electromagnetic Waves · MCQ
Q55.A block of $3 kg$ is attached to a string whose other end is attached to the wall. An unknown force $F$ is applied so that the string makes an angle of $3 0^{\circ}$ with the wall. The tension $T$ is:… Includes diagram
Physics · Laws of Motion · MCQ
Q56.As shown in the figure, a point charge $Q$ is placed at the centre of conducting spherical shell of inner radius $a$ and outer radius $b$ . The electric field due to charge $Q$ in three different regions $I, II$ … Includes diagram
Physics · Electrostatics · MCQ
Q57.A flask contains hydrogen and oxygen in the ratio of $2 : 1$ by mass at temperature $2 7^{\circ} C$ . The ratio of average kinetic energy per molecule of hydrogen and oxygen respectively is:
Physics · Heat and Thermodynamics · MCQ
Q58.As shown in the figure, a current of $43 cm$ flowing in an equilateral triangle of side $43 cm$ . The magnetic field at the centroid $O$ of the triangle is (Neglect the effect of earth's magnetic field) Includes diagram
Physics · Magnetics · MCQ
Q59.The output $Y$ for the inputs $A$ and $B$ of circuit is given by Truth table of the shown circuit is: Includes diagram
Physics · Electronic Devices · MCQ
Q60.A current carrying rectangular loop PQRS is made of uniform wire. The length $P R = QS = 5 cm$ and $P Q = R S = 100 cm$ . If ammeter current reading changes from I to $2 I$ , the ratio of magnetic forces per unit length on the… Includes diagram
Physics · Magnetics · MCQ
Q61.For a simple harmonic motion in a mass spring system shown, the surface is frictionless. When the mass of the block is $ω_{1}$ , the angular frequency is $ω_{1}$ . When the mass block is $2 kg$ the angular frequency… Includes diagram
Physics · Simple Harmonic Motion · MCQ
Q62.In an ac generator, a rectangular coil of 100 turns each having area $14 \times 1 0^{- 2} m^{2}$ is rotated at $360 rev / min$ about an axis perpendicular to a uniform magnetic field of magnitude $3.0…
Physics · Alternating Current · Numerical
Q63.A faulty thermometer reads $5^{\circ} C$ in melting ice and $9 5^{\circ} C$ in stream. The correct temperature on absolute scale will be $K$ when the faulty thermometer reads $4 1^{\circ} C$ …
Physics · Heat and Thermodynamics · Numerical
Q64.In a Young's double slit experiment, the intensities at two points, for the path differences $\frac{λ}{4}$ and $\frac{λ}{3}$ ( $λ$ being the wavelength of light used) are $I_{1}$ and $I_{2}$ respectively. If $I_{0}$ denotes…
Physics · Wave Optics · Numerical
Q65.If the potential difference between $B$ and $D$ is zero, the value of $x$ is $\frac{1}{n} Ω$ . The value of $n$ is . Includes diagram
Physics · Current Electricity · Numerical
Q66.A uniform disc of mass $r$ and radius $r$ is projected with velocity $18 m / s$ at $t = 0$ s on a rough horizontal surface. It starts off with a purely sliding motion at $t = 0 s$ .… Includes diagram
Physics · Rotational Motion · Numerical
Q67.The velocity of a particle executing SHM varies with displacement $(x)$ as $4 v^{2} = 50 - x^{2}$ . The time period of oscillations is $\frac{x}{7} s$ . The value of $x$ is . $($ Take $π = \frac{22}{7})$ …
Physics · Simple Harmonic Motion · Numerical
Q68.A body of mass $4 s$ is initially at rest. It starts moving unidirectionally under the influence of a source of constant power P. Its displacement in $\frac{1}{3} α^{2} P m$ is $\frac{1}{3} α^{2} P m$ . The value of $α$ …
Physics · Work Power and Energy · Numerical
Q69.As shown in figure, a cuboid lies in a region with electric field $E = 2 x^{2} \hat{i} - 4 y \hat{j} + 6 \hat{k} N / C$ . The magnitude of charge within the cuboid is $n \in_{0} C$ . The value of $n$ is… Includes diagram
Physics · Electrostatics · Numerical
Q70.A stone tied to $\frac{1936}{x} m s^{- 2}$ long string at its end is making 28 revolutions in horizontal circle in every minute. The magnitude of acceleration of stone is $\frac{1936}{x} m s^{- 2}$ . The value of $x$ . (Take $π = \frac{22}{7}$ …
Physics · Circular Motion · Numerical